Qingdao Ryd Hardware Co., Ltd. is an import and export corporation in China. Our product mainly are screws, bolts, nuts, flat washers, spring washers and other kinds of stainless steel and carbonic fastening piece. The products are produced in conformity with DIN, ANSI, ASME, JIS, ISO. Materials to ensure that material 304.316 200, 201, 202and customized according to customer requirements! If you are interested in our products please feel free to send us your inquiry or contact us for long-term and friendly cooperation. We will offer our best prices and services to return your support.